Mitering-machine.



, PATENTED OCT. 23, 1906.

W. U. KANT-NEE;

MITERING MACHINE.

APPLICATION FILED 8EPT.15. 1905.

- 2 SHEETS-SHEET 1.

INVENTOR No. 834,206. PATENTED OCT. 23

W. G. KANTNER'.

MITERING MACHINE.

APPLIOAT'ION FILED SEPT. 15, 1905.

INVENTOR vide a matical To all. it may cortcern; I :Be it known that I, WASHINGTON NER,'-a citizen of the United States, residing UNI ED STATES PATENT OFFICE. pwAsnlNe'roN c. KANTNER, ornilAmNe; PENNSYLVANIA.

' ;r e-- =---4s=-w r at Reading in the county of Berks, State of Pennsylvania have invented certain ncw'and {useful Improvements in- Mitering-Machines,

of which-the following is aspecification reh erence being had therein to the accompany ..ingl;draw1ngs.

invention relates to a mitering ma chine, and particularly to an apparatus of this character adapted for framing-work .The invention hasfor an object to provide,

' a novel and improved construction of parts bywhich the saw is mounted upon a vertically-reciprocating shaft adapted for oscillatory adjustment in its bearin s and disposed in aplane substantially paral el.,with the lon- 'gitudinal axis of said shaft. v A A further object of the invention is to ro -.vide improved means for retaining this s aft and its saw at the desired angle of mclination' I or adjustment and for permitting a Sliding movement thereof at that time. I

Another object of the-invention is to prog'uard for the saw adapted to autov y withdraw from the periphery of the'saw in the descending movement thereof andto again cover the cutting under-face of the saw in its ascending movement.

Other and further objects of the invention Will'behereinafter set forth and the novel claims.

In the drawings, Figure 1 is a perspective of the invention. Fig. 2 is a front elevation thereof. Fig. 3 is a plan of the adjusting plate. Fig. 4 is a detail perspective thereof. ig. 5 is an enlarged detail elevationof the. latch for engagin said plate.- Fig. 6. is a de-' tail elevation of t e saw and its guard-plate.

"features thereof defined in the appended Fig. 7 is a detail perspective of said guar l' lookin from the right of Fig. 2'; and Fig.8is' a detai vertical section on the line 8 8 Fig. 2..

' Like lettersof reference referto like parts throughout the several views'of the drawings,

The letter A designates astandard or support of any desired construction or configuration and'provided with su porting-arms A and A disposed .in para el Planes above each other. These arms are provided with bearings for the vertical reciprocation of the saw-shaft B, which shaft is rovided at its lower end with a lateral brac et B, secured thereto any desired manner-for instance,

I saw.

Specification of Letters Patent i i Patented Oct. 23, 1906. hpplieation filed ape-n1," 15, 1 966." seen Ru. 278,688.

" by theset-screwB and provided at its lower portion. with bearin -b'oxes B to receive thedrivingrshaft B, w ich carries at its outer end the saw B At the upper end of the shaft B. an electric or other suitable motor B is mounted and the shaft B thereof provided with. the drivingulley B whichislconnected by belt B wit the driving-shaft B of the i For the purpose of-counterbalancing the parts carried by the shaft B asuitable weight .0 is provided and connected with the motor by means. of a cable G", ,extending over'the supported bearing-wheel C and connected at Q to theHmot'or-casing. This weight normally retains the saw in elevated position, as

shown in Figs. 1' and 2, and when it is desired to' relie've the parts of the wei ht to-perally mounted upon the supporting-frame A mit the descent of the saw a trea e is pivotof the table orplatform A,upon' which the standard A is mounted. This treadle is con- ,nected bymeans of acable C assin .over

the bearing 'ulley C onthe un er s ace'of the tablean connected at C with theweight, so that the de ression of the treadle raises the Wei ht an permits the lowerin" of-the saw-sha and the partscarried there In manycases it is desirable to adjust the ength of the cable 6*, which may be accomplished by means of the turnbuckle C, as shown in i Fig. 1, which adjusts, the extent of travel of the treadle, and consequently the. extent of travel of the shaft carrylng the saw.

For the purposeof maintaining the drivin -belt B under propertension an adjustab e connection isprovided at the'upper end of the shaft Band comprises the fixed member D, secured upon-theupper end of the shaft-B in any desired mannerfor instance,

.by the set-screw Dand the adjustable member D carried by the base D upon which the motor B rests, and these arts are adapted to be secured in position 'y means of bolts D, passing throughtheslot D in the fixed member and through the adjustable member D The shaft B is me inted to swing or oscillate the bearings of the arms A and A so as to permit the adjustment of thesawto the necessary angle for cutting the miter-joint,

and for they purpose of securing the saw in accurate posit on for that purpose a holdingplate E is providedwith an aperture E,'

through which the shaft B passes, and-with a ICC At the opposite side of each of these adjusting-slots bearing-blocks are adjustably secured by means of screws E, passing through slots a in the plate E, so as to sesaid shaft.

- cure an accurate adjustment of the miteringangles and compensate for any wear of the parts in use.

The latch F is pivoted at F upon a supporting-arm F secured to the shaft B, and is provided with a handle F at its lower portion, by which it may be turned inward, as shown in dotted lines in Fig.' 5, so as to pass beyond the edge of the plate E and permit a rotary adjustment of the saw-shaft without engaging the plate, while the latch is restored to its initial position by means of the sprin F disposed between the beveled free en thereof, and the vertical guiding-bar F This guiding-bar is provided at its upper end with an arm FF, secured to the shaftB and extending outward therefrom, so as to maintain the bar in a parallel vertical plane with This (guiding-bar provides means by which the ban le may be used to swing the saw-shaft and when released pressed inwardand looks it in position by the engagement of the latch with the plate E.

The saw B is provided with an automatically-operating guard Gr,- which .is pivotally mounted upon the driving-shaft B of the the retaining-plate G secured to the lateralsaw and held against longitudinal movement thereon by means of the grooved sleeve G, disposed on said shaftand held in position by bracket B from the saw-shaft B. This guard is provided with a weight G so as to normally throw the guard into the position point-for instance, the arm A shown by full lines in Fig. 6 when the saw and its shaft are in their raised position. When the shaft is drawn downward to throw the saw into operation, the guard is automatically'rotated into the position shown in dotted lines in 'Fig. 6- by means of a connec-' tion extending from the guard to a fixed This connection may be of any desired charaeterfor instance, a chain G, extending from an eye Gr upon the guard to the similar eye Gr upon the arm. At the rear of the saw a fix d guard G of any ordinary construction is secured.

- The-table or platform A may be of any de-- sired construction and is provided with the saw kerfs or grooves A extendin at different angles, and with the work-c amps A adapted to 'be adjusted in position by means of the screw A at the front of the table.

The table is also :provided with an adjustable ssgeoe gage-bar A of any ordinary or desired con-- struction, by which both the long and short end of the frame may be measured.

In the operation of the machine the molding is placed in position upon the table and the saw with its shaft turned to the angle desired, which can only be accomplished when the saw is in raised position, with the guard protecting the same. The saw is then lowered into cutting position and the guard automatically removed by pressure upon the treadle to permit the descent of the saw, which comes straight downward upon the work and instantly cuts the same at the desired angle, this angle being absolutely retained by means of the guide-barF, which travels in the groove of the plate E-during the downward movement of the saw to insure the accurate maintenance of the miterangle. The weights are sufiicient to automatically raise the saw when the pressure is released from the treadle, and it therefore only requires a slight force to carry the saw downward through the work, while the weight of'the saw and its shaft and motor are sustained by the wei ht, which permits the rotary adjustment' t ereof to the desired angle. If desired, the saw maybe held in vertical position and against reciprocation by means of the set-screw A", disposed in the arm A to engage the shaft B, carrying the saw. With the parts thus secured the backs of picture frames or-other strai ht sawing can be accomplished by feeding t e work to the saw. Itwill be seen that any desired miter angle or bevel may be sawed by the proper adjustment of the saw-shaft, and the guard thereon absolutely prevents contact with the saw when the same is out of en agement with the work, while the vertica adjustment of the saw permits the same to come directly into contact with the-work and obviates the necessity of swingingsaw into engagement therewith. The treadle connection for lowering the saw permits the use of both hands in feeding or adjusting the work. This effects a sim le, economical,

and efiicient construction a apted to occupy 'but little space and to be operated byelectric current from an adjacent fixture.

Having now described my invention and set forth its merits, what I claim, and desire to secure by Letters Patent, is-

-1. In a miteringmaehine, a standard, a vertically-disposed shaft mounted to recip- 'rocate and rotate therein, a'circular saw carried by'the lower end of said shaft in a plane substantially parallel with the longitudinal axis thereof, counterbalancing means for supporting said shaft, a motor upon the upper end of said shaft 'for rotating said saw and a driving-connection'from the motor to the saw-shaft. I"

2. In a mitering-machine, a standard, a vertically-disposed shaft mounted to rotate stantially parallel to the longitudinal axis therein, 'a' saw carried by the lowerje'ndof said shaft in a lanel substantially parallel with the longitu inal axis thereof, means for supporting said shaft, a holding-plate mounted upon said standard, and a'latch'carried by said shaft to engage said plate.

r '3. In a mitering-machine', a standard, a ivertically-dis'posed shaft mountedto reciprocateand rotate therein, a saw carried by [0 the lower end of said shaft in a plane substantially-parallel to" the longitudinal axis thereof, means for suporting said shaft,a'

holding-plate mounte u on saidstandard, a

latch-carried by said'sldhft tolngage said plate, and agui'de b'ar carried by said latch to engagesaid plate during the reciprocation of saidshaft." i V I 4. In 'ajmitering-inachine; a standard, a

vertically disposed shaft mounted to recip I do rocate and rotate therein, a saw carried by the lowerend of said shaft in a plane sub-.

stantiallylparallel to the longitudinal axis thereof, means for supporting said shaft, a

holding-plate mounted upon said standard,

2 5 a latch carried by said shaft to engage said plate, a guide-bar carriedby said latch to engage said plate during the reciprocation of said shaft, a motor carried by the upper end 'of said shaft, a laterally-disposed bracket at the lower end of said shaft to receive the driving-shaft of the saw, and a belted connection between saiddriving-shaftand motor.

51 Ii a mitering-machine, a standard, a vertically-disposed shaft mounted, to reciprocatea'ndrotate therein, a-sawcarried by ,thelowerend 'of said shaft in a plane subthereof, means for 'su porting said shaft, a holding-plate mounte upon said standard, a

.wlatch carried bysaid shaft'to engage said '45 the lower end of said-sha plate, a guide-bar carried by said latch'to en gage said plate during the reciprocation .of'

.said shaft, a motor carried by the upper end of said sh'a'ft, a laterally-dis osed bracket at to receive the driving-shaft of the saw, a belted connection between said driving-shaft and motor,-and.-

an ad'ustable connectionbetween the motor and t e upper end of the supporting-shaft for maintaining said belt under tension.

6. In a mitering-machine, a support, a

shaft mounted therein, a rotary saw driven by said shaft, a guard-plate rotatably mouht ed upon the axis of said saw, and a connec t1on extending from saidguard-plate te -{a5 relatively fixed point.

-- 7 .-In a -'tering-machine, a support,

' shaft mountedtherein, a rotary sawdri-ven by said shaft, a guard-plate rotatablymount ed upon the axis of said saw, a conr'i'ectionv extendingfiom said guard-plate to a rela'- v 'tively fixed point, and-means carried by one end of said plate for moving the same be-- qneath fthe sawfwhen tension upon the con- 5 nectionisfreleas ed.

shaft in a plane substantially parallel to the shaft mounted to reciprocate and oscillate .therein,'a saw carried by one end of said 8 In a mitering-machine, a support, a

shaft mounted to reciprocate therein and pro+ vided at its lower end with alaterally-extendshaft for a saw mounted in said bracket, a

guard-casing provided with a collar mounted upon said driying-shaft, a retaining-plate mounted upon the bracket-to engage a portion 'ofsaid collar, a connection extending between said support and a point-on'said casing 'below the driving-shaft of the saw, a restor ing-weight at the lower portion of said casing, and. a fixed guard-plate at the rear of said casing. v

I 10. In a miteringmachine, a standard, a shaft mounted to- -reciprocate and oscillate therein, a saw carried by one end of said shaft, in a plane substantially parallel to the longitudinal axis thereof, a holding plate mounted upon said standard and provided with recesses disposed radially of said shaft, a guide-bar supported by said-shaft parallel thereto to travel in said recesses, and apivoted latch'atthe lower portionof said bar adapted to be thrown out of the path of said plate.

,11. In a mitering-machine, a standard, a

jshaft mounted to reciprocate and oscillate therein, a .saw'carried by one end of'said r 5 longitudinal axis thereof, a holding-plate mounted upon said standardand provided with recesses disposed radially to said shaft, a guide bar supported by said shaft parallel thereto to'travel in said recesses, a pivoted 11 latch at'the lower end of said bar'oomprising a beveled point disposed in a recess in the bar,

and a restoring-spring between said'point and the-bar.

.12. In a miteringmachine, astandard, a

shaft, a plane substantially'parallel to the longitudinal axis thereof, a holding-plate mou nted upon saidstandard and provided with recesses disposed radially to said shaft,

a guide-bar supported by said shaft parallel thereto to travel in said recesses, a pivoted "latch carried by said bar, and adjustable blocks carried by said holding-plate at the sides of the recesses therein. .13; In amitefing-machine', a standard, a

shaft mounted to reciprocate and oscillate therein and provided at its upper end with a fixefl'olamping member having a slotted Wall," I 30 a cooperating adjustable member, securingbolts extending between said members, a motor mounted upon said adjustable member, a saw and its driving-shaft at the lower portion of said supporting-shaft and having its axis at substantially a right angle thereto, and a belted connection between said drivingshaft andmotor;

14.- In a mitering-machine, a supportingplatform, a standard thereon, a shaft mount ed to reciprocate and oscillate in said standard, a saw carried by theflower end of said shaft, in a plane substantially parallel to the longitudinal axis thereof, a motor carried by the upper end of said shaft and geared to drive said saw, a supporting-pulley, a-cable extending from said motor over said pulley, and a counterbalancing-weight at the lower end-of the cable.

15. In a mitering-machine, a s1ipp0rtingplatform, a standard thereon, a shaftmount- I ed to reciprocate and oscillate in said standard, a saw carried by the lower end of said shaft, in a plane substantially parallel to the longitudinal axis thereof, a motor carried by the upper end of said shaft and geared to dri e said saw, a supporting-pulley, a cable extending from said motor over said pulley, a

counterbalancing-weight at .the lower end of the cable, a treadle mounted upon said platform, and a connection between said treadle and said weight to lift the latter.

' 16. In a initering-machme, a su portingplatform, a standard thereon, a shaft 1nount ed to reciprocate and oscillate in said standard, a saw carried by thelower end of said shaft, in a plane substantially parallel to the longitudinal axis thereof, amotor carried by v the upper end of said shaft and geared to drive said saw, a supporting-pulley, a cable extending from said motor over said pulley, a counterbalancing-weight at the lower end of the cable, a treadle mounted upon said platform, a flexible connection between said 

